Sewing-machine.



W. PEPPBRLING. SEWING MACHINE.'

APPLICATION FILED FEB. 4, 1909. 975,155 Patented Nov.8, 1910.

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W PEPPERLING. SEWING MACHINE.

ArrLIoA'rIoN FILED 255.4, 1909.

Patented 1\I(w.8,191o.l

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WILLIAM PEPPER/LING, OF TWO HARBORS, MINNESOTA.

SEWING-MACHINE.

Specification of Letters Patent.

Patented Nov. 8, 1910.

Application led February 4, 1909. Serial N o. 476,149.

T o all 'whom it may concern.'

Be it known that I, WILLIAM PEPPERLING, a citizen of the United States,and a resident of Two Harbors, in the county of Lake and State ofMinnesota, have made certain new and useful Improvements inSewing-Machines, of which the following is a specification.

My invention is an improvement in sewing machines, and consists incertain novel conaway; Fig. 4 is a transverse section; Fig. 5

is a longitudinal section of the shuttle and its operating mechanism,Fig. 6 is a perspective view of the same with the parts separated. Fig.7 is a diagrammatic view of the shuttle not supplied with thread, andFig. 8 is a similar view showing the same supplied with thread.

The present embodiment of the invention comprises a shell 1providedAnear each end with an interrupted transverse slot 2, 3, forlightness and cleanliness and its internal diameter is increased aboveits vertical center to form a shoulder 4. A second shell 5 is arrangedwithin the first shell, and is provided at its upper end with an annularflange 6, resting upon the shoulder and with an interrupted transverseslot 7, below the shoulder. A pinion 8, is secured to the lower end ofthe shell 5, which extends below the shell 1, by means of a screw 9.

A cylindrical pin 10 is arranged within the shell 5 and the lower end ofthe pin is provided with a trunnion 11, which is journaled in a bracket23 on the machine. The upper face of the pin is provided at one sidewith a rounded projection 13, for a purpose to be presently described,and a thread receptacle or cup 14, rests on the end of the pin, the baseof the cup having a recess 15 for receiving the projection. One side ofthe cup is cut away as at 16 for a purpose to be presently described.

The shuttle 17 is of inverted cup shape,l

and is provided in one side with a slot, which extends in a curveddirection as at 18 to the center of the shuttle. A spring 19, isconnected with the top of the shuttle, and extends across the curvedportion of the slot as shown in Figs. 1 and 6. The shuttle is providedwith a vertical groove 20, on its outer face, and one of the side wallsof the groove is cut away from the top Iof the shuttle to form a hook 21at the bottom of the shuttle. The shuttle rests on the edge of the shell5, and incloses the receptacle or cup 14 and the upper edge of the shell5, is provided with a pin 5a which extends into the groove 20 of theshuttle, whereby to cause the shuttle to move with the shell. The upperend of the shell 1 is fixed in a bearing plate 22, arranged below thetop plate 27 of the ma.- chine, and the bearing is secured to a bracket23, secured to the base plate.

The pinion 8 before mentioned meshes with a gear segment 24, on the endof an arm 25, connected with a sleeve 26 journaled on a pin 27 a, in thetop plate of the machine. The sleeve is provided with an arm 28, havinga recessed end in which is secured a lug 29, extending into a bearing 30on a sleeve 31, secured on the reduced end of an arm 32, which is pvotedto the arm of the machine as at 33. The upper end of the arm is providedwith an angular portion 34, which engages a cam 35 secured to thedriving shaft 36 of the machine arm.

It will be evident from the description, that when the shaft 36 rotatesthe arm 25 will be oscillated, and through the gear segment and thepinion the shuttle will also be oscillated. The shell 1 is provided onits inner face with a vertical groove 37, into which the needle 38 ofthe machine extends, on its downward stroke, and the hook 21 is adaptedto engage within the loop of thread formed by the commencementof t-heupward stroke of the needle.

The cup or receptacle 14 is adapted to contain a ball of thread which isso wound as to unreel from the inside, and the balls are supplied to thecup from a magazine 39, arranged below the top plate and rectangular inshape. A chute or passageway 40 is arranged transversely of the magazineat the end adjacent to the shuttle, and a follower 41 in the magazine isacted upon by a spring 42, to move the balls toward the chute, the

follower having a lug 43 extending through a longitudinal slot in oneside of the magazine, whereby to guide the follower.

A slide 44 moves through the chute, which communicates with the magazineand has its end opening adjacent to the cut away portion of the cup 14,which is always stationary within the shuttle. The slide 44 is connectedto one end of a lever 45, pivoted to the top plate as at 46, and theother end of the leveris pivoted to one end of a second lever 47 pivotedby its other end as at 4S, to the top plate. The lever 47 has pivotedthereto, an arm 49, whose free end is normally out of the path ofmovement of a pin A50 on the gear segment 24, and a rod 51 is connectedwith the arm, the rod being provided with an angular portion 52, whichextends to a point adjacent tothe spring 19' and normally in the path ofmovement thereof, when the shuttle is oscillated. The arm 49 is retainedout of the path of movement of the pin 50, by means of a spring 49a,whose one end is securedto a bracket 22a on the plate 27, the other endengaging the `rod 51.

In the operation of sewing, the shuttle oscillates and the spring 19voscillates therewith. When there is thread in the shuttle, the threadpasses up through the slot, and interlocks with the thread from theneedle in the usual manner. The engagement of the shuttle thread withthe spring 19, holds the said spring in the position shown in Fig. 8, sothat as the shuttle oscillates it willnot engage the angular portion 52of the rod 51. As long as there is thread in the shuttle, the spring isso held as it passes the portion 52 of the rod. lVhen however the threadin the shuttle is exhausted the spring is free to take the positionshown in Fig. 7. Vhen now the shuttle oscillates with the spring in this.posit-ion, the free end thereof will engage the angular portion 52 ofthe rod and will swing the arm 49 into position for engagement by therod 50. The segment 24 vibrates continuously, and when 'the pin engagesthe arm 49, the slide 44 is operated to push a ball of thread into thecup or receptacle. As soon as the needle thread interlocks with thethread just supplied to the shuttle the shuttle thread is drawn upwardlythrough the slot and engages the spring 19 to move it into the positionshown in Fig. 8 so that it will not strike the angular portion 52 of therod. Then the spring`52a immediately returns the arm 49- to its originalposition, where it will not be engaged by the arm 49. The pin strikesthe arm, swings the lever 47 which in turn swings the lever 45, andmoves the slide through the chute, thus pushing a ball into the cup. Aspring 54 is secured by one end to the top plate, as at 55 and the otherend engages a pin 56 on the lever 45, to return the parts to theirnormal position. A stop 47a is provided on 'the end of the lever 47, tolimit the swinging "movement of the arm 49 in one direction.

.. The stitch is formed, by the engagement `of the hook 21 with the loopof thread on the needle, during the forward oscillation of the shuttle,the lower portion of the loop passin between the shuttle andthe upperedge of the shell 5, and between the cup and the upper end of thecylinder 10, so that the shuttle passes entirely through the loop.

`When the loop tightens, it tightens on the lower thread, the threadfrom thel ball forming 'the lower portion of the stitch. 4The engagementof the projection 13 with the recess 15 prevents rotation of the cup.

The transverse slot 2 at the upper end of the shell l as will beobservedV from inspection Vof Fig. 6 is enlarged `as at 22a to permit`the passage of the ball of thread, and a portion of the side of Ytheshuttle is cut away at 17a for the saine purpose. IVhen the shuttle is.in normal position, the cut away portion thereof registers with the cutaway portion of the cup, which latter registers at all times with theenlarged portion 22a of the slot. Y

I claim 1. In a sewing machine,-acylindrical shell provided on its innersurface with an annular shoulder, a second shell having a iange restingupon the shoulder, said second shell extending below the first shell, apinion secured to the extended portion, a cylindrical pin withinthe'second shell, said pin having on its upper end Va projection, athread cup or receptacleV resting upon the end of the pin, said cuphaving one of its sides cut away, a shuttle of inverted cup shaperesting upon the upper edge of the second shell and inclosing the cup,said shuttleV having a cut away portion normally registering with thecut away portion of the cup and having a curved slot extending throughthe side thereof to the center of the shuttle for permitting the passageof the thread, a spring crossing the slot, said shuttle having on oneside a groove and a hook adjacent to the groove for engaging the threadof the needle, a pin on the second shell extending into the groovewhereby to cause the shuttle to rotate with the shell, a magazineadjacentto the shell, said magazine being provided adjacent to the shellwith a transverse chute whose one end refristers with thelio saidsegment being provided with a pin, an arm for moving the slide normallyout of position for engagement by the pin on the segment, a rodconnected with the arm and normally in position for engagement by thespring on the shuttle when said spring is not engaged by the thread inthe cup and means' for operating the segment.

2. In a sewing machine, an oscillating shuttle, a stationary threadreceptacle or cup within the shuttle, said cup having a cut away portionat one side for receiving a ball of thread and a shuttle having a cutaway portion normally registering with the cut away portion of the cup,a magazine for holding balls of thread adjacent to the shuttle andprovided with a transverse chute registering with the cut away portionof the cup, a spring pressed follower in the magazine, a slide movablethrough the chute, means for oscillating the shuttle, means operated bysaid oscillating means for moving the slide through the chute, andnormally disconnected therefrom, a spring connected with the shuttle forconnecting the oscillating means with the slide moving means, saidspring being arranged in the path of movement of the thread passing fromthe shuttle, whereby to be moved out of engaging position when theshuttle is supplied with thread.

3. In a sewing machine, an oscillating shuttle, a thread receptaclewithin the shuttle said shuttle and receptacle being provided withnormally registering openings for permitting the passage of a ball ofthread, a magazine `:tor supplying the balls of thread, means for movingthe balls of thread from the magazine into the receptacle, means foroscillating the shuttle, means for connecting the oscillating means withthe ball moving means, a spring in connection with the shuttle foroperating said connecting means, said spring being arranged in the pathof movement of the thread passing from the shuttle and adapted to bemoved out of operative position when the shuttle is supplied withthread.

t. In a sewing machine, an oscillating shuttle, a thread receptaclewithin the shuttle, said shuttle and receptacle being provided withnormally registering openings for permitting the passage of a ball ofthread, a magazine for supplying the balls of thread, means for movingballs of thread from the magazine into the receptacle, means foroscillating the shuttle, normally inoperative means for connecting theoscillating means with the ball moving means, means for operating theconnecting means, and means controlled by the passage of the thread fromthe receptacle, for restraining the operation of the means for operatingthe connect-ing means.

5. In a sewing machine, an oscillating shuttle, a thread receptaclewithin the shuttle, means for supplying balls of thread in succession tothe receptacle, means for oscillating the shuttle, means for connectingthe oscillating means with the ball supplying means whereby to operatethe same, normally active means for actuating the connecting means toconnect the oscillating means with the ball supplying means, and meanscontrolled by the passage of the thread from the receptacle forrestraining the operation of the said normally active means.

6. In a sewing machine, an oscillating shuttle, means for oscillatingthe shuttle, normally inoperative means for supplying thread to theshuttle, means for actuating the supplying means, and means operated bythe passage of thread from the shuttle t0 restrain the said actuatingmeans from operation.

WILLIAM PEPPERLING. Witnesses:

B. F. FowLER, AUG. TABoR.

